<template>
    <div class="hello">
        <h1>{{ msg }}</h1>
        <p v-n="4"></p>
        <p :class="[a1, a2]">class数组语法</p>
        <p :class="{'test-1': a3}">class对象语法</p>
        <p :class="obj">class Data对象语法</p>
    </div>
</template>

<script>
    export default {
        name: 'HelloWorld',
        props: {
            msg: String
        },
        data() {
            return {
                a1: 'test-1',
                a2: 'test-2',
                a3: true,
                obj: {
                    'test-1': true
                }
            }
        }
    }
</script>

<!-- Add "scoped" attribute to limit CSS to this component only -->
<style scoped>
    h3 {
        margin: 40px 0 0;
    }

    ul {
        list-style-type: none;
        padding: 0;
    }

    li {
        display: inline-block;
        margin: 0 10px;
    }

    a {
        color: #42b983;
    }
</style>
